Means for use in automatically controlling the timing in magneto ignition apparatus.



A. RILLING.

MEANS FOR use IN AUTOMATICALLY CONTROLLING THE TIMING IN MAGNETO IGNITION APPARATUS.

APPLICATION FILED NOV. 25, l9ll- RENEWED DEC. E1917.

Patented July 16, 1918.

2 SHEETS-SHEET l- Fig.2 I

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Inven tor:

Attest:

m: "cums PEYERS m, PHOTD-LIYHO..\'IASHING1ON. n. c.

A.- BILLING. MEANS FOR USE IN AUTOMATICALLY CONTROLLING THE TIMING IN MAGNETO IGNITION APPARATUS.

APPLICATION FILED Nov. 25. I911. RENEWED DEC. 6. m1.

1 373,095. Patented. July 16, 1918.

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MEANS Foe USE INAUTOMATICALLY ooirrebnnme THE mnvime 'm ivrmimro *IGNI'IION APPARATUS.

1,2173 5, s ecification of Letters laltent. Patent d- J 1y16,-1918, Application filed'November ZS,1911,S'i'iaTNoY6623G3. ReneWeH'Dec'inber'G, 1917-. "SriaL1 No.205,896.

To all whomjjit may'wncem: v

Be it kndw'n "that I, A BERTRiIEIN e citizen of the Gefrmtn Empire, and residing at 'Frenkfo'r' t omthe-Main, in the Kirigdbm of Prussia, Province of Hesse-'Nass'emfG'ermany, haveinvented c'erta'innew eniln'seful Improvements in Means for Usein'Automziti'ee'lly Cd11trdl1ing the Timing in Mag- :neto Ignition Apparatus, f 'Whieh. the fol- 'lowin'g'isfa specification. This in ention relates 'to improved means for use inautomaticallyControlling the timing in magneto ignition-apparatus, 'sneh' as eemmbnly employed in connection with internal combustion engines. Such timing is dependent upon the angular position of the magnet'o shaft wh'er'eon the armature is indunted in relation 'to' tliet 'of"thefm0t0r shaft, 'or shift driventhe'refrdm, 7

Many attempts have beei' made to ary such angular position au'tdmeticelly upon a ehzinge oceurrln'g 'inthe *speed f the engine. Aceorclingftopone method, acen'trirugzil(gov- 'erneri apem'tes' a sliding sleeve frhoiinted' ion a spindle 'fe'rim'egl a 'q iic'k-piteh' thr'eeld; any longitudinal f movement j of j "the sl'eeve im arting "a rdtative movement 't -the spindle, fthe'reby advancing "or' retarding E the "angul'ar' position of theerinatiire. A

As, in thefdonstruction 'of such apparatus, the spae available is somewhat "restricted, it is 'cliflieult to secure a la'r-ge angulir varia'tien; the latterbeing 'rid'r'melly liniitedto 'abeiit'30 to 40. In praetiee, fhd'wiQViIf," 32m ja'ngiilar displaeement' =exte'rfding through as "many as is oftelifrequird. va-rious nkieai is have ackiortliiigly been proposed f0r inereasing 1 the relatively small "ihove'inent; fer "eizztinple, i'by' prbyidihgf the turningshe ft of the lever With e tob'thed- "Whe'elefigziging with a'eorre'spbndingtbdthed- Wheel'pertaiiiin'g t'othe parts to bereIzitiVeIy displaced. Ac'eerliiig to another 'c'onstiiiction, the entiifiigel bodies, 5 sitiiatd" symfeature eii'tziils appliancs of a somewhet expensivechaieeter. The db'jje'ct'df the present ihventiiin'fis tozprevi'de n eans 'whereby the desired i'sfilt may "'be "iibteined in g,

pompamtively simple manner namely, by thje'eriiplbynigntof an element which, though in itself flexible, ssuse'eptilol'e' to th'einflw enceoffcentrifugal-{force 'Inth'edraWings, Figure 1 is av iew of'the 'Qdriifing an'clflriv'en parts (thearrnfeture'aind jthe slia'f t insec'tio'n,slnd of the flexible cen- -fleeting element side elevation, with the s'aicl'drivingend driven parts in one relative "position; Fig. 2' is-miew similar to Fig.1, butsh'owingth'e driying' and driven partsfin another relative "pbsition Figs. 3 and iflajre 'vieWs sirnila'r to Figs. 1 and 2 'respeetively, showing .enother form' of flexible connectien; Fig.- 5is a Viewinsideelevation-illus- :tratin'g a 'lnbdified form Of fl 'e'xible connection; Fig. '6 is mviewjsilniler to Fig; 5, illustrating still another modification Fig. 7 is a iew inside elevation of pne'of'the links'sho'wn in Fig. 6; and Fig. 8 is a. "section'threi gh the link's'hownin Fig. 7. v

In the accompanyingdrawings, Figs. 1, 2,

3 and 4., illustrate, in side elevation, two forms of flexible centrifugal" devices Sli'Ch' as I prefer to employ betweenthe shaft wind the armeture'b; but it'will be understood thateny other flexible "device (Silh as 21. tiibe filled' with inerciiry, a 'caldle'o'r' thfe'like) wpiild "be equally appropriate.

, advance "'11 the e nplbyment of "afflexibleehainyshztft, ca'ldle or the like, as compared Withe system of rigid levers, is (luefto the feet that the flexible element, which, in a small space permitstheem'ploy- 'rnent of "heavy operating wi eightsfneds' n0 'comp'liate'd s stem of leVersto produc'ethe required result. I v V To fiitiliz'e to fthe best' advantagethe "small fspaee' iisiially available, a. "chain 10 (Figs. 1 ati cl "2) the links bf which jer efinede "heavy,

semen-merit. For th eeke er elsmegs half equally well of a hose charged with mercury, small shot or the like.

In the constructions hitherto known a :varying. stateof equilibrium may be observed cases? employedfas the latter is liable to' break ortoslacken, whereby not only the timing of the ignition would be varied in an undeslrable manner but also the symmetry ofthe whole rotating structure would be destroyed which; under some circumstances, would seriously endanger the bearings.

fT-he construction to whichthe present-invenues relatespresent the further advantages: that, instead of a single spring, --a

plurality of such springs are arrange'd at different points. In the 'CO11Si3I'L10t1QI1'lll11S- trated in side elevation in; Fig. 5-of' the ac companying drawings, a chainlike contrivance is used, which,in connection with controlling springs, resents certain advantages referred to later on. a

' Referring more particularly to this figure, lap- 74 are centrifugal bodies which are attached to theinner side of a band-"spring b, and together form a flexible. 7 connecting element. 5 Upon the band spring contracting so that its extremities approach one another the eff feet of-the rotating. centrifugal bodies is counteracted, and the] spring connects the parts A andB whereof the angular position is to: be regulated. J H It. may also, in certain cases,replace the usual outer casing which, by its weight,

causes unnecessary strain upon'the bearings, thus permittingro-f the employment of. a dust-cap only. On the other hand centrifugal] bodies having their .movements vunrestricted "would not safely take the curve required for obtaining the maximum'angular displacement. On the contrarythe danger exists thatat-some points, for instance, at thelin-k 70 the centrifugal force may increase until the chain breaks.. H

To prevent the centrifugal bodies from flying too'far, springs 7,f are-provided butanyi other suitable means i for limiting the movement .may be used in addition, for examplewa lever 7L which is able'to :yield to thelateral displacement oflc' as shown in The centrifugal bodies 74 -70 are preferi tblyj fixedjwlth1flVeiiS it formed rintegral with -them.;;On the side. a'djacent ;tothe spring, they are curved so that-theycannot hinder the contraction ofthef spring If the weights are affixed} to the {outer side of the; spring 6, their; side planes would come c ose. together thusf limitingtheir- -moveeet;

7 Fig; 6 illustrates in side elevationan alternative construction wherein a I chain is employed in conjunction with feather springs instead of spiral, springs:. This construction has i the 1 advantage: that the-centrifugal bodies abut successively against the limiting wall 'w as the pressure prevailing inthe' section between any two springs in creases.

'- This )ressure varies with each jartic'ular link 73 If now an oscillation occurs, it is not suddenly communicated to allof the links, one of the advantages resultingfrom the employment of apluralityrof springs in V the: manner described being 7 that-itallows of a stable adjustment fora-ny number of revolutions within the whole range of- :ellicicnc y of the timing device, I;

L Theconstructin shown in Fig. 6, wherein a series; of links are united in the form of a chain; is especially. adaptedto the use ofv a plurality 'of springs arranged around: the vperiphery. It :is obvious that the springs Qcan 'be mounted in much morereliable .mannerthan in the case of a flexible shaft. Furthermorasuch links are adapted for production on a largescale: 7 V The formof link, which I prefer, is illustrated in side elevation :in Fig. ,8, and is made out .of afsolid block-andso arranged,

' that the pineengagesimmediately with the recess Z of an adjacent link, thus avoiding special connections. By this arrangement, without requiring more space, greater centrifugal force is obtained as compared with .block or roller chains of theordinary kind which, owing totheir great number 'ofbear- .ings and the friction produced .thereby, are not suitablevfor this purpose. Another ad yanta gejis connected with the employment of externally situated band sj oringslwhich,

though not immediately. adhering to the inventive idea, may 'bementioned ne erther less. By means of a wall w movable for example by screwss 8 the angle of adjust ment may be limited in accordance withthe numberof revolutions. The wall aswell asthe screws need not be carried by the .piece Av but-can be connected toot in any suitable manner. The arrangement of the wallw permits 'also to place the wall e0 which for technical reasonsis originally 5 .made round, afterward eccentrically, whereby a certain ratio of dependence of the num V .berof revolutions is obtained. I I I g 7 However, these arrangements are only necessary if theadjustment is'required to be very precise as,;fo-r,1nstance,. n the case of flying machines.

; To prevent the springs 'fromibeingfoverexerted, and the centrifugalbodies from flyingtoo far outwardly the links are pro- .vvided with projecti ieces a, a which,

whcnj the 7 chain is flying. outward, limit the efficiencyiofthe latter; In casestwhere the centrifugal bodies press strongly against the fixed wall the springs are protected by the piece a, from over-exertion and fracture.

The employment of a plurality of springs presents the further advantage that the movement of the free ends of the springs f can be adjusted, thus allowing the timing of the ignition to be brought into direct relation to the number of revolutions. To this end a series of screws, one opposite each of the springs, are screwed into the fixed wall '10, by the turning of which the adjustment of the springs f fn is obtained. It is not necessary to provide each of the springs with a displaceable abutment, fewer screws thus suflicing. According to a further modification the limiting wall 10 is connected with the screws or other adjusting contrivance by means of a movable spring or of several springs. In such case the adjustment of the spring 7 is preferably made in'the first instance instead of afterward from the exterior. In the case of a smaller angle of ad justment, it will be advisable to insert a special wall 10 preferably in the shape of a ring segment, between the casing A and the chain. This auxiliary wall can be provided with recesses for allowing the screws s,-s to pass through. For the inner wall a number of stops may be substituted.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I claim 1. In apparatus of the class described, the combination of a driving part, a driven part, and an elongated flexible element connecting said parts to centrifugally vary their relative angular position.

2. In apparatus of the class described, the combination of a driving part, a driven part, an elongated flexible element connecting said parts to centrifugally vary their relative angular position, and a casing whose interior limits the outer centrifugal position of the flexible element.

3. In apparatus of the class described, the combination of a driving part, a driven part,

and an elongated flexible element connecting said parts to centrifugally vary their relative angular position, and comprising a series of heavy bodies mounted on a spring band.

4:. In apparatus of the class described, the combination of a driving part, a driven part, and an elongated flexible element connecting said parts to centrifugally vary their relative angular position, and springs spaced along the flexible element tending to resist its centrifugal outward movement.

5. In apparatus of the class described, the combination of a driving part, a driven part, an elongated flexible element connecting said parts to centrifugally vary their relative angular position, a casing whose interior limits the outer centrifugal position of the flexible element, and springs acting between the casing and the difi'erent parts of the flexible element to resist its centrifugal outward movement.

6. In apparatus of the class described, the combination of a driving part, a driven part, and an elongated flexible element connecting said parts to centrifugally vary their relative angular position, and radially adjusting inclosing means which adjustably limits the outer centrifugal limits of the flexible element.

7. In apparatus of the class described, the

combination of a driving part, a driven part,

one within the other, and a chain-like element connecting said parts in their plane or zone of rotation. v

8. In apparatus of the class described, the combination of a driving part, a driven part, a spring band connecting them, and a series of heavy bodies responsive to centrifugal action and acting on the spring band to vary the relative angular position of the parts upon rotation thereof.

In testimony whereof I have aflixed my signature in presence of two witnesses.

ALBERT BILLING. Witnesses:

JEAN GRUND, CARL GRUND.

Copies 0: this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

